[Duration of the lactation period in Czechoslovak women].
D001942:Breast Feeding; D003604:Czechoslovakia; D005260:Female; D006801:Humans; D007223:Infant; D007227:Infant Nutritional Physiological Phenomena; D007231:Infant, Newborn; D007774:Lactation; D011247:Pregnancy; D013997:Time Factors
Dĺzka laktacného obdobia u nasich zien.